Modding Help Getting shockwave ability to work on a monster.

Code:

require "/scripts/util.lua"
require "/scripts/vec2.lua"
require "/scripts/rect.lua"

-- Helper functions
function fireShockwave()
  local impact, impactHeight = impactPosition()

  if impact then
    local charge = math.floor(config.getParameter("maxDistance"))
    local directions = {1, -1}
    local positions = shockwaveProjectilePositions(impact, charge, directions)
    if #positions > 0 then
      --need to scale the power
      local params = copy(config.getParameter("projectileParameters"))
      params.power = scalePower(params.power)
      params.actionOnReap = {
        {
          action = "projectile",
          inheritDamageFactor = 1,
          type = config.getParameter("projectileType")
        }
      }
      for i,position in pairs(positions) do
        local xDistance = world.distance(position, impact)[1]
        local dir = util.toDirection(xDistance)
        params.timeToLive = (math.floor(math.abs(xDistance))) * 0.025
        world.spawnProjectile("shockwavespawner", position, entity.id(), {dir,0}, false, params)
      end
    end
  end
end

function impactPosition()
  local position = mcontroller.position()
  local bounds = mcontroller.boundBox()
  local offset = {0,bounds[2]}
  return vec2.add(position, offset)
end

function shockwaveProjectilePositions(impactPosition, maxDistance, directions)
  local positions = {}

  for _,direction in pairs(directions) do
    direction = direction * mcontroller.facingDirection()
    local position = copy(impactPosition)
    for i = 0, maxDistance do
      local continue = false
      for _,yDir in ipairs({0, -1, 1}) do
        local wavePosition = {position[1] + direction * i, position[2] + 0.5 + yDir + config.getParameter("shockwaveHeight")}
        local groundPosition = {position[1] + direction * i, position[2] + yDir}
        local bounds = rect.translate(config.getParameter("shockwaveBounds"), wavePosition)

        if world.pointTileCollision(groundPosition, {"Null", "Block", "Dynamic", "Slippery"}) and not world.rectTileCollision(bounds, {"Null", "Block", "Dynamic", "Slippery"}) then
          table.insert(positions, wavePosition)
          position[2] = position[2] + yDir
          continue = true
          break
        end
      end
      if not continue then break end
    end
  end

  return positions
end

function scalePower(power)
  local level = 1
  power = power or 10

  if entity.entityType() == "monster" then
    power = power * root.evalFunction("monsterLevelPowerMultiplier", monster.level())
    level = monster.level()
  elseif entity.entityType() == "npc" then
    power = power * root.evalFunction("npcLevelPowerMultiplierModifier", npc.level())
    level = npc.level()
  end
  power = power * status.stat("powerMultiplier")
  return power
end

I know what I need to do. I simply need to call fireShockwave using the runFunction node right? But it's not working for some reason. Here's the monster in question in case the has anything to do with it.
https://pastebin.com/b0UQLdfD

No errors in the log.